For years, this Mercy Corps-seeded venue has been honing a masterpiece: a hand-tenderized Carlton Farms pork loin that’s been sprinkled with bread crumbs, panfried, and placed hot and crispy into a Grand Central ciabatta roll amid the company of fresh greens, caramelized onions, a spicy red-pepper spread, and homemade horseradish. This is the Schnitzelwich. No reason to change a thing.